if there really is a significant playerbase that wants to play pugs but doesn't get picked in rgl captain pugs, the move should be to start populating open pugs (https://pugs.tf.plus/pug/6s%20Open). when pugs were more alive, this was how things were set up; open pugs would run consistently with lower level players and some high level players would add up because they were more active than captain pugs. tf2mix on IRC was probably the most successful form of this in NA.
however this only really works if these pugs actually run often, which requires there to be people who actually want to play them. I think tf2 culture might have evolved past this point but i wish it could still be like this.